Add local host mode and configurable LLM providers

apps/device-host-agent/host_agent/app.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 import asyncio
 import logging
 from contextlib import suppress
-from dataclasses import dataclass
+from dataclasses import dataclass, replace
 
 import uvicorn
 
@@ -22,6 +22,7 @@ from host_agent.identity import HostIdentityStore
 from host_agent.instance_lock import InstanceLock
 from host_agent.lease import ActiveAssignmentRunner
 from host_agent.local_account import LocalAccountStore
+from host_agent.local_client import LocalHostAgentClient
 from host_agent.mcp_lock import McpBusyTracker
 from host_agent.mcp_token import McpTokenStore
 from host_agent.policy_cache import HostPolicyCacheStore
@@ -173,25 +174,37 @@ def create_application(
             startup_config.identity_path
         )
         owned_enrollment_client = enrollment_client is None
-        bootstrap_client = enrollment_client or HostAgentEnrollmentClient(
-            startup_config
-        )
+        bootstrap_client = enrollment_client or HostAgentEnrollmentClient(startup_config)
         try:
-            resolved_config = resolve_host_identity(
-                startup_config,
-                identity_store=resolved_identity_store,
-                client=bootstrap_client,
-            )
-            bootstrap_client.config = resolved_config
-            resolved_manager = manager or _configured_device_manager(
-                config_store,
-                config=resolved_config,
-                enrollment_client=bootstrap_client,
-            )
+            if startup_config.mode == "local":
+                resolved_config = replace(
+                    startup_config, control_plane_url="", host_id="local-host"
+                )
+                resolved_manager = manager or _configured_device_manager(
+                    config_store, config=resolved_config, enrollment_client=None
+                )
+            else:
+                resolved_config = resolve_host_identity(
+                    startup_config,
+                    identity_store=resolved_identity_store,
+                    client=bootstrap_client,
+                )
+                bootstrap_client.config = resolved_config
+                resolved_manager = manager or _configured_device_manager(
+                    config_store,
+                    config=resolved_config,
+                    enrollment_client=bootstrap_client,
+                )
         finally:
             if owned_enrollment_client:
                 bootstrap_client.close()
-        client = HostAgentClient(resolved_config)
+        if resolved_config.mode == "local":
+            client = LocalHostAgentClient(
+                host_id="local-host",
+                device_ids=lambda: [device.id for device in resolved_manager.list_devices()],
+            )
+        else:
+            client = HostAgentClient(resolved_config)
 
         history_store = ConsoleHistoryStore(
             resolved_config.identity_path.parent / "host_console_history.sqlite3",
@@ -352,7 +365,7 @@ def _configured_device_manager(
     config_store: DeviceConfigStore,
     *,
     config: HostAgentConfig,
-    enrollment_client: HostAgentEnrollmentClient,
+    enrollment_client: HostAgentEnrollmentClient | None,
 ) -> DeviceManager:
     manager = DeviceManager()
     for device in config_store.list():